Yes, John Lott is from my alma mater, the University of Chicago.
Who wrote the book called More guns, Less Crime, I believe. He compared states with concealed carry laws to those without. And he found out crime rate dropped dramatically in states that adopted concealed carry.
An armed Society is a polite Society.
I looked up and ran the numbers, and about 10% of the adult population of my state has a concealed weapons license. It’s an enormous number, when you think about it.
I think that argument was later shown to be somewhat debatable. What it certainly showed, as did the increase in firearm sales over the last eight years, is that more guns and more citizen CCW absolutely did not correlate to an increase in violent crime.